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Data migration method, system and device at host machine end

A host-side and data technology, applied in the field of communication, can solve problems such as occupation and waste

Inactive Publication Date: 2013-05-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, after a traditional storage system receives a migration command for a data object from the host, it will migrate the entire Logical Unit Number (LUN) where the data object resides (LUN refers to the A logical hard disk, for example, if the hard disk is inserted locally on the host, the hard disk will exist as a LUN) to migrate at a granularity, for example, if the target storage level of the migration is a solid state disk (Solid State Disk, referred to as "SSD"), then Once the entire LUN is migrated to the SSD, it is a waste if only some areas in the LUN are found to be hot spot data (Hot Spot), and the rest still occupy the SSD space.

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  • Data migration method, system and device at host machine end
  • Data migration method, system and device at host machine end

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044]The storage level in the embodiment of the present invention is mainly determined according to the combination of different disk types, different RAID types, the number of disks in different RAID groups, and the performance after weighting. The different storage levels can be divided into different levels of refinement. differentiated everywhere. In the embodiment of the present invention, an SSD hard disk or a Serial Advanced Technology Attachment (...

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Abstract

The invention provides a data migration method, a data migration system and a data migration device at the host machine end. The data migration method comprises the steps of ascertaining the source address of a target data object and ascertaining the migration strategy of the target data object, wherein the source logical hard disc which the target data object belongs to comprises a plurality of data objects; and sending object migration information to a storage system, wherein the object migration information comprises the source address of the target data object and the migration strategy of the target data object, so that the storage system can obtain the target data object according to the source address of the target data object and migrates the target data object according to the migration strategy of the target data object conveniently. According to the data migration method, the data migration system and the data migration device at the host machine end, data migration granularity can be reduced and refined performance adjustment can be achieved.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to a data migration method and system, and a host terminal device. Background technique [0002] Information Lifecycle Management ("ILM") is an ideological understanding and management method for the entire information technology (Information Technology, "IT") system or the data ecological chain in other data systems. Hierarchical Storage Management (HSM for short) exists as a technical means to realize ILM. Between different material levels, HSM corresponds different needs with different material levels one by one, and maintains this corresponding relationship. The significance of data hierarchical storage management is that the host side can instruct the storage system to place frequently accessed and high-performance data in high-performance disks or disk arrays (Redundant Arrays of Inexpensive Disks, referred to as "RAID") groups, while The infrequently acces...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 万富元张冬崔文林
Owner HUAWEI TECH CO LTD
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